I generate an array of Int inside Haxe macro and would like to apply a function on it like this:
typedef ComponentIdArray = Array<Int>;
class MyMacros {
// Each descendant of 'Component' has static member 'id_'
// Convert array of classes to corresponding indices
public static macro function classesToIndices(indexClasses:Array<ExprOf<Class<Component>>>) {
var ixs = [for (indexClass in indexClasses) {macro $indexClass.id_ ;}];
return macro $a{ixs};
}
public static macro function allOf(indexClasses:Array<ExprOf<Class<Component>>>) {
var indices = macro Matcher.classesToIndices($a{indexClasses});
// FIXME
// FIXME 'distinct' is a function from thx.core -- DOES NOT WORK
//var indices2 = macro ($a{indices}.distinct());
return macro MyMacros.allOfIndices($indices);
}
public static function allOfIndices(indices:ComponentIdArray) {
trace(indices);
//... normal function
// currently I call indices.distinct() here
return indices.distinct();
}
}
Usage:
class C1 extends Component {} // C1.id_ will be set to 1
class C2 extends Component {} // C2.id_ will be set to 2
var r = MyMacros.allOf(C1, C2, C1); // should return [1,2]
Since everything is known compile-time I would like to do this in macro.